User Manual

AS4000 Central Terminal
Installation and Commissioning
DLP 011
605-0000-452
Issue 1.3dr Date 7/02/00
Page 5 of 6
.
Power
Meter
ST
Test
Unit
1.8-1.9GHz
band
CT Rack
3
1 2
30dB
30dB
30dB 30dB
2:1
Splitter
2:1
Splitter
2:1
Splitter
SMA-N
RF Sensor
N-SMA
11dB
Variable *
* Set variable attenuator to give an insertion loss of 109dB
between points A and B (nominal value of 8dB)
DIP/LNA TX Filter
RX
TX
A
B
If TX Filter not fitted
Terminate port here
Adapter
Female to
Female
C
Screened
Box
Figure 35. Test Set-up 1.8-1.9GHz Band
2. The variable attenuator must be set so that the TOTAL PATH LOSS between the
output of the DA CT rack, and the Uplink port of the test ST ( for 1.8-1.9 GHz =
109dB, for 2.0-2.3GHz, 2.3-2.5GHz, and 3.4-3.6GHz =106db). In order to achieve
this, the set-up must be calibrated so that the cable loss is taken into account. It is also
important for the ST to be screened as shown in the diagram. Once set-up, follow the
procedure below:
3. Power-up the ST.
4. Program the ST to the correct frequency, PN code and ID number by using the
STMON for Windows
5. Once the ST has booted-up, put ST into test mode by typing: TE 0
6. Type W 426 to monitor link state
7. The ST will return link state and update at anytime the link state changes, the values of
the link state can be: